If you do not have symptoms but have been exposed to COVID-19, wait at least 5 full days after your exposure before taking a test. If you are only going to take a single test, a PCR test will ...

RSV tests include nasal swabs or blood tests to detect the virus's genetic material or antibodies, but rapid tests provide quick results.

Testing experts suggest an interval of 48 hours before a second test. Now if you do go for a PCR test, you won't have quite the same concerns.

If a rapid test produces a negative result but you have a cough, fever or other symptoms, the CDC recommends you also do a PCR test.

How Long Can You Test Positive for COVID-19 Following Infection? When it comes to testing, PCR tests are more likely to continue picking up the virus following infection ...

Multiple infectious disease specialists told USA TODAY COVID-19 PCR tests cannot be used to clone humans.

Syndromic multiplex PCR tests offer a timely, cost-effective solution in the fight against pathogens — a potentially crucial tool as climate change and other challenges increase the burden of ...